11121102197 has 4 divisors (see below), whose sum is σ = 11124957216. Its totient is φ = 11117247180.

The previous prime is 11121102193. The next prime is 11121102217. The reversal of 11121102197 is 79120112111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79120112111 = 31 ⋅2552261681.

It is a cyclic number.

It is not a de Polignac number, because 11121102197 - 2² = 11121102193 is a prime.

It is a super-2 number, since 2×11121102197² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121102191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1923179 + ... + 1928952.

It is an arithmetic number, because the mean of its divisors is an integer number (2781239304).

Almost surely, 2^11121102197 is an apocalyptic number.

It is an amenable number.

11121102197 is a deficient number, since it is larger than the sum of its proper divisors (3855019).

11121102197 is an equidigital number, since it uses as much as digits as its factorization.

11121102197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855018.

The product of its (nonzero) digits is 252, while the sum is 26.

The spelling of 11121102197 in words is "eleven billion, one hundred twenty-one million, one hundred two thousand, one hundred ninety-seven".